Airtel interview experience Real time questions & tips from candidates to crack your interview
SDE - 2
Airtel
3 rounds | 11 Coding
problems
Selected Interview preparation journey
Journey
I started my journey with Wipro in testing at the fresher level, where I learned SQL. Simultaneously, I studied Core Java, OOPS, DSA, and Spring. For Java and OOPS, I referred to the Smart Programming YouTube channel. For DSA, I referred to Anuj Bhaiya's YouTube channel, and for Spring, I referred to the Telusko YouTube channel.
Application story
I applied on Naukri.com and received a call from a consultant asking me to share my resume and details via email. I asked her about their interview process, including the number of rounds, the tech stack, etc.
Why selected/rejected for the role?
I was selected because I answered most of their interview questions, and my skills matched their requirements.
Preparation
Duration: 6 months
Topics: Java, OOPS, DSA, Design Patterns, SQL, Rest API
Tip 1: Do not deep dive into one subject if you get bored. Immediately switch to another subject. For example, if you have completed four DSA problems on arrays and feel a mood swing, switch to questions on trees, stacks, or linked lists. If you get bored with DSA, switch to a development framework, and vice versa.
Tip 2: For DSA problems, always start with a brute force approach and then optimize the code.
Tip 3: Always dry-run the code by making diagrams and indexes. In interviews, do the same with an oral explanation for each step.
Application process
Where: Naukri
Eligibility: 2+ years experience
Tip 1: Include projects on your resume for which you are confident in your complete architectural knowledge.
Tip 2: Explain your roles and responsibilities in detail for your current projects.
Interview rounds
01
Round
Medium
Video Call
Duration60 minutes
Interview date11 Feb 2021
Coding problem2
1. Pair Sum
Easy
15m average time
90% success
0/40
Asked in companies
Check if a pair with the given Sum exists in Array (Two Sum).
Problem approach
I started with a brute force approach using 2 For loops and dry run the same then used the hash map approach to have better time complexity followed by dry run and then also told binary search approach if array got sorted.
2. Next Greater Element
Easy
10m average time
90% success
0/40
Asked in companies
I started with a brute force approach using 2 For loops and dry run the same then used the stack approach to have better time complexity followed by dry run.
02
Round
Medium
Video Call
Duration60 minutes
Interview date16 Feb 2022
Coding problem5
1. Annotation
Explain about these Spring annotations like @Controller, @RestController, @Entity, @Id, @RequestMapping, @GetMapping, @Query, @PathVariable, @RequestParam
2. Design Pattern
Explain the MVC design pattern.
3. SQL Query
SQL query to fetch highest salaried employees from each manager (Practice)
4. Microservice Architecture
Explain Microservice architecture and its advantages over monolithic. (Learn)
5. HTTP Codes
Explain HTTP codes in rest like 404, 200, 500. (Learn)
03
Round
Medium
Video Call
Duration60 minutes
Interview date24 Feb 2022
Coding problem4
Technical managerial round.
1. Puzzle
Minimum cuts required to divide the cake exactly into 8 pieces.
2. System Design
Explain complete architecture for current project.
3. Managerial Round
How will you contribute initially if selected?
4. HR Round
Why looking for a change?
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
Choose another skill to practice
Similar interview experiences
Lead Software Engineer
5 rounds | 4 problems
Interviewed by Airtel
Selected 
1348 views
1 comments
0 upvotes
Software Engineer
2 rounds | 4 problems
Interviewed by Airtel
Selected 2361 views
0 comments
0 upvotes
SDE - 2
3 rounds | 5 problems
Interviewed by Airtel
Selected 1845 views
0 comments
0 upvotes
SDE - 2
2 rounds | 3 problems
Interviewed by Airtel
Rejected
3377 views
0 comments
0 upvotes
Companies with similar interview experiences
SDE - 2
5 rounds | 12 problems
Interviewed by Walmart
Selected 29892 views
8 comments
0 upvotes
SDE - 2
3 rounds | 5 problems
Interviewed by Amazon
Rejected
6765 views
1 comments
0 upvotes
SDE - 2
6 rounds | 8 problems
Interviewed by Amazon
Selected 5280 views
0 comments
0 upvotes